On 12-13 April 1988 a workshop on the analysis of avian population trends was held at the Patuxent Wildlife Research Center in Laurel, Maryland. The workshop was cosponsored by the Branch of Migratory Bird Research of the Patuxent Wildlife...

Salt marshes, especially the muddy, wet, intertidal portions of them that are described in this report, have often been considered wastelands--areas to be filled to make useful land or to be dredged to make useful water. From the scientific point...

This is a children's coloring book of various endangered species. It provides images of each species for coloring, as well as educational information on the species. The animals included are: Bald Eagle, California red-legged frog Karner Blue...

This is a description of the molt and aging criteria for four grassland passerines. The species covered are Sprague's Pipit, Grasshopper sparrow, Baird's sparrows, and Chestnut-collared Longspurs. Molt information is important for determining...

This is a guide to help with data analysis of avian monitoring programs. It covers assessment of abundance and species composition using point counts, demographic monitoring via mist-nets and demographic monitoring via nest-monitoring. The guide...